//infer uniform type from structure of ofParameterGroup g
//and set in shader from values in g.
//assumes shader->begin() has been called already
void ofxBaseShaderNode::setShaderParam(ofParameterGroup &g){
size_t dim = g.size();
//need to infer the uniform type from size of, and types in, this group
//unfortunately g.getType(0) is weird and compiler dependent, so this.
//weep for me, weep for c++
string type = "";
if(g.contains("0i"))
type = "int";
else if(g.contains("0f"))
type = "float";
string param_name = g.getName();
// cout<<"node "<<name<<" setting "<<type<<" "<<dim<<" uniform "<<param_name<<endl;
if(type=="float"){
// cout<<g.getFloat("0f")<<endl;
switch(dim){
case 1:
shader->setUniform1f(param_name, g.getFloat("0f"));
break;
case 2:
shader->setUniform2f(param_name, g.getFloat("0f"), g.getFloat("1f"));
break;
case 3:
shader->setUniform3f(param_name, g.getFloat("0f"), g.getFloat("1f"), g.getFloat("2f"));
break;
case 4:
shader->setUniform4f(param_name, g.getFloat("0f"), g.getFloat("1f"), g.getFloat("2f"), g.getFloat("3f"));
}
}
else if(type=="int"){
switch(dim){
case 1:
shader->setUniform1i(param_name, g.getInt("0i"));
break;
case 2:
shader->setUniform2i(param_name, g.getInt("0i"), g.getInt("1i"));
break;
case 3:
shader->setUniform3i(param_name, g.getInt("0i"), g.getInt("1i"), g.getInt("2i"));
break;
case 4:
shader->setUniform4i(param_name, g.getInt("0i"), g.getInt("1i"), g.getInt("2i"), g.getInt("3i"));
}
}
}
//--------------------------------------------------------------
void ofShader::setUniforms(const ofParameterGroup & parameters) const{
for(int i=0;i<parameters.size();i++){
if(parameters[i].type()==typeid(ofParameter<int>).name()){
setUniform1i(parameters[i].getEscapedName(),parameters[i].cast<int>());
}else if(parameters[i].type()==typeid(ofParameter<float>).name()){
setUniform1f(parameters[i].getEscapedName(),parameters[i].cast<float>());
}else if(parameters[i].type()==typeid(ofParameter<ofVec2f>).name()){
setUniform2f(parameters[i].getEscapedName(),parameters[i].cast<ofVec2f>());
}else if(parameters[i].type()==typeid(ofParameter<ofVec3f>).name()){
setUniform3f(parameters[i].getEscapedName(),parameters[i].cast<ofVec3f>());
}else if(parameters[i].type()==typeid(ofParameter<ofVec4f>).name()){
setUniform4f(parameters[i].getEscapedName(),parameters[i].cast<ofVec4f>());
}else if(parameters[i].type()==typeid(ofParameterGroup).name()){
setUniforms((ofParameterGroup&)parameters[i]);
}
}
}
//--------------------------------------------------------------
void testApp::update()
{
// get value directly
string s;
if (keyValue.get("/string_value", s))
{
cout << "/string_value: " << s << endl;
}
// get value as osc message
ofxOscMessage m;
if (keyValue.get("/test", m))
{
cout << "/test: " << m.getArgAsFloat(0) << endl;
}
// use Key-Value-Store style address
keyValue.get("/myObject1.pos", myObject1.pos);
keyValue.get("/myObject1.color", myObject1.color);
for (int i = 0; i < params.size(); i++)
{
string name = "/"+params.getName(i);
if ( keyValue.get( name, params.get(i) ) )
cout << "update param " << name << " = " << params.get(i) << endl;
}
// FIFO queue access
int value;
while (keyValue.get("/uzi", value))
{
printf("%i\n", value);
}
}
